Ambipolar all-polymer bulk heterojunction field-effect transistors

Krisztina Szendrei, Dorota Jarzab, Zhihua Chen, Antonio Facchetti*, Maria A. Loi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

77 Scopus citations


We demonstrate solution processable all-polymer based field-effect transistors (FETs) exhibiting comparable electron and hole mobilities. The semiconducting layer is a bulk heterojunction of poly{[N,N′-bis(2- octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5, 5′-(2,2′-bithiophene)} (n-type polymer) and regioregular poly(3-hexylthiophene) (p-type polymer). These polymers form a type-II heterojunction as revealed by the faster photoluminescence dynamics of the blend compared to the pristine materials. An electron mobiliy of 4 × 10 -3 cm2/V s and a hole mobility of 2 × 10 -3 cm2/V s were extracted from the transfer characteristics of bottom contact FETs. The balanced mobilities suggest that the active layer is a fine network of the two components, as confirmed by atomic force microscopy phase images.

Original languageEnglish (US)
Pages (from-to)1317-1321
Number of pages5
JournalJournal of Materials Chemistry
Issue number7
StatePublished - 2010

ASJC Scopus subject areas

  • General Chemistry
  • Materials Chemistry


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